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54FT 7-Size Black 4:1 Heat Shrink Tubing Kit

$27.99 USD

Keep several diameters ready without fixing every length.

Make different cable transitions easier to cover.

• Seven size choices — select the correct fit from the listed 3/32–3/4-inch diameters.
• Cut-to-length flexibility — trim each sleeve around the required coverage area.
• 4:1 adhesive-lined finish — properly heated tubing insulates and helps seal compatible joints.

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54FT 7-Size Black 4:1 Heat Shrink Tubing Kit combines seven tubing diameters for insulating, sealing, and protecting wire joints, terminals, cable bundles, and harness branches. The 54FT option includes longer rolls in the most-used midrange sizes, while the 21FT option provides 3FT of every size.

54FT Size & Length Guide
Before Diameter Nominal Recovered Diameter 54FT Kit Length 21FT Kit Length Roll Quantity Wall Thickness Material / Sealing Recommended Application
3/32 in (2.4mm) Approx. 3/128 in (0.6mm) 6FT 3FT 1 roll Not published Dual-wall plastic, self-adhesive lining Fine wires and compact splices
1/8 in (3.2mm) Approx. 1/32 in (0.8mm) 6FT 3FT 1 roll Not published Dual-wall plastic, self-adhesive lining Small wires and narrow terminals
3/16 in (4.8mm) Approx. 3/64 in (1.2mm) 6FT 3FT 1 roll Not published Dual-wall plastic, self-adhesive lining Light wire bundles and small joints
1/4 in (6.3mm) Approx. 1/16 in (1.6mm) 9FT 3FT 1 roll Not published Dual-wall plastic, self-adhesive lining Common wire joints and terminal barrels
3/8 in (9.5mm) Approx. 3/32 in (2.4mm) 12FT 3FT 1 roll Not published Dual-wall plastic, self-adhesive lining Medium cable joints and harnesses
1/2 in (12.7mm) Approx. 1/8 in (3.2mm) 9FT 3FT 1 roll Not published Dual-wall plastic, self-adhesive lining Larger cable joints and connector bodies
3/4 in (19mm) Approx. 3/16 in (4.8mm) 6FT 3FT 1 roll Not published Dual-wall plastic, self-adhesive lining Large connectors and cable assemblies

The 54FT lengths total 54FT; the 21FT option provides 3FT of each size. Recovered diameters are nominal values calculated from the stated 4:1 ratio. Wall thickness and a numeric heating-temperature range are not published on the current listing.

❓What sizes are included in the 54FT kit?

The 54FT kit includes 3/32, 1/8, 3/16, 1/4, 3/8, 1/2, and 3/4 inch tubing. The included lengths are 6, 6, 6, 9, 12, 9, and 6FT respectively.

❓What is included in the 21FT option?

The 21FT option includes the same seven diameters with 3FT of each size.

❓How do I choose the correct 4:1 tubing size?

Choose a before-shrink diameter that clears the widest part of the joint and a nominal recovered diameter smaller than the section to be sealed.

❓Is this tubing adhesive-lined?

Yes. The current listing identifies self-adhesive installation and dual-wall construction, which helps form a moisture-resistant seal when heated correctly.

❓What heating temperature should I use?

The current listing does not publish a numeric temperature range. Apply controlled, even heat, keep the heat source moving, and stop after the sleeve has fully recovered and the adhesive has sealed the edges.

❓How to Choose the Right Size

Measure the widest part the tubing must pass over, including the connector or splice. Choose a before-shrink diameter larger than that point, then confirm the nominal recovered diameter is smaller than the cable or joint you want to seal. The 4:1 ratio is especially useful where the joint is much wider than the wire. Choose 54FT for repeat workshop or fleet use and 21FT for occasional repairs.

❓How to Install

  1. Disconnect power, clean the cable or joint, and cut the required tubing length.
  2. Slide the tubing over the cable before completing any permanent connection.
  3. Center the tubing over the joint and apply controlled heat, moving from the center toward both ends.
  4. Rotate the assembly so the sleeve recovers evenly and the adhesive seals the edges.
  5. Stop heating when recovery is complete and allow the joint to cool before handling or restoring power.

Avoid open flame and overheating. The listing does not provide a numeric temperature range, so use controlled, even heat and follow the heat-tool instructions. Browse more heat shrink tubing, compare the 5-color 4:1 heat shrink tubing kit, or use a 350W mini heat gun for controlled heating.
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  • Delivery Time: 1-2 business days to The US and Canada. Delivery times may vary depending on your location and carrier conditions.
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  • 30-Day Returns
    You may request a return within 30 calendar days of delivery. Items must be unused, in their original condition, and include all original packaging and accessories.
  • Damaged, Defective, or Incorrect Items
    Contact us with your order number and photos. If the issue is due to our error, we will cover reasonable return shipping costs or provide an appropriate replacement.
  • Refunds
    Approved refunds are issued to your original payment method within 5 business days after inspection. Your bank may require additional processing time.
  • To start a return, email support@haisstronica.com with your order number and reason for return. Please obtain approval before sending anything back.
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S
Stephen Cutlip
Good quality, price is a little high

I am a marine mechanic and use a lot of heat shrink every season. This brand is good quality and does shrink down well. It is easy to use and easy to cut to length. This kit has a good selection of sizes and good lengths of each. Compared to other similar products on the market, the price is a little high.

J
J Edward
Worth the cost

So far so good. Shrinks nicely and seems to stay on.

R
Robert Derringer
Thick tubes

Quality, thick shrink tubes...Fast service...

J
James W
Excellent quality heat shrink tubing. The adhesive makes it a must have.

This worked extremely well. The shrinkage was as advertised and the adhesive helps hold the wires in place. I have had no issues with this holding up to direct sunlight over long periods of time so it should last a very long time in most environments. Contributing to this is the thickness of the material. The fit was as expected and was cut into convenient lengths so I had no waste with my projects.

S
Smitty
decent heat shrink tubing

This kit is perfect to keep around for the random project around the house. I wanted to seal some conduit, and this was the perfect material for it. The tubing shrank down as expected to the 4:1 ratio, and was perfect to fit my needs. I wanted the different color tubes for some upcoming projects, though in retrospect I wish I had ordered the kit with different size tubes - that will be my next order as I will order this product again. It was a great value for the price, and I expect it to hold up to many years outdoor use as it is marine grade tubing.

Close-up of insulated wire connectors joining red, blue, and yellow wires

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Learn More About Porduct

  • 4:1 Shrink Ratio: it can shrink to 1/4 of the original diameter,Shrink tighter and seal better than 3:1 and 2:1.
  • Good Seal: The supplied adhesive coating provides a strong and durable seal that protects your wires from moisture, dirt and other external elements. Say goodbye to loose connections and potential short circuits
  • Crystal Clear:Inspect Connections Through the Tube — Transparent body lets you visually verify solder joints, crimp quality, and adhesive flow after installation. Also works as label protection — slide over printed wire markers to keep them readable, waterproof, and scratch-resistant.
  • Wider Application: Heat shrink tubing is used for marine and automotive wiring, wire connections and DIY electrical wiring projects. For all your needs


This black 4:1 heat shrink tubing kit is designed for automotive and marine wiring, electrical repairs, terminal and splice protection, cable-bundle organization, strain relief, and DIY projects. Its dual-wall construction adds insulation and mechanical protection, while the internal adhesive helps block moisture and dirt. Do not use it as a substitute for a connector, fuse, or manufacturer-required insulation system.

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